[Emergency] MacBook can't find the bootloader

[Suno]

Mid-2012 MBP.

The only custom part I have is a 256gb SSD. The default partition that the computer boots to is bootcamp.

Basically, I let the battery die by accident when I forgot to plug the charger in. I plug it back in, boot up and it's fine the first time. Computer crashes almost immediately after and now every time I turn it on, I get a white screen. If I load into Mac partition, it gives me Internet recovery and asks me how I'm going to reinstall the os. If I boot into boot camp, I get a black screen telling me the bootloader is non-existent and to put in a recovery disk.

 

[yjchua95]

Mid-2012 MBP.

The only custom part I have is a 256gb SSD. The default partition that the computer boots to is bootcamp.

Basically, I let the battery die by accident when I forgot to plug the charger in. I plug it back in, boot up and it's fine the first time. Computer crashes almost immediately after and now every time I turn it on, I get a white screen. If I load into Mac partition, it gives me Internet recovery and asks me how I'm going to reinstall the os. If I boot into boot camp, I get a black screen telling me the bootloader is non-existent and to put in a recovery disk.

Boot into Internet Recovery and reinstall OS X. Relax - all your files, apps and preferences will remain intact.

 

[Suno]

I can't reinstall OS X. I went into Internet Recovery and tried to do as you said, and it tells me that I already have the latest OS X installed and won't let me. Boot camp partition is locked.

 

[Fishrrman]

This is why one -always- keeps an external BOOTABLE backup drive around...

 

[ssls6]

Boot recovery, bless the OS X partition (select it as startup drive), then reboot. You may eventually need a windows CD to repair the bootcamp volume.

 

[chrfr]

it tells me that I already have the latest OS X installed and won't let me.

What is the exact text of this error message?